Fig. 5.
Time course of cytokine production in PD-F4 in response to antigenic stimulation.
PD-F4 was stimulated with autologous BLCLs at hour zero and harvested at different time points for flow cytometric analysis of cytokine expression as in Figure 4. (A) Enumeration of cells expressing IFN-γ, IL-2, or IL-4. (B) Enumeration for cells coexpressing 2 cytokines. A representative of 2 independent experiments is shown.